Combined tank and pot furnace.



. PATNNTEDAUG. 14,1808. J. A. CHAMBERS. COMBINED TANK- AND 80T PUNNAGN.

3 SHEETS-SHEET L APPLICATION PILED'I'EB.15.1905.

WITNESSS PATENTED AUG. 14, 1906.

J. A. CHAMBERS.

VG()MBUUID TANK ND POT PURNAGE,

yEPLICATION FL'LED TEB.15,1905.

s SHEETS-SHEET z.

/ff W 1...

No. 828.838. PATBNTED AUO.14, 1906.

` J. A. CHAMBERS.

COMBINED TANK 4A1111 POT FURNAOE.

APPLIOATlON FILED 111115.15. 1905.

` 3 SHEETS-SHEET 3..

wrrraEssEs aw i , are side elevations of forms of pots which I `10. having a door-opening closed by a vertical UNITED srarns PATENT marion.

JAMES A. CHAMBERS, OF ALLEGHENY, IENNSI LVANIA, ASSIG-NOR, ABY

MESNE ASSIGNMENIS. T() GEORGE T. OLIVER, OF ALLEGHENY COUNTY, PENNSYLVANIA.

COMBINED TANK- AND POT FURNACE.

Specification of Letters Patent.

Patented Aug. 14, 190e.

llpplieation filed February 15,1905. Serial No. 245,780-

To all whom, it Htc/y concern:

Be it known that LJAMEs A. CHAMBERs, of Allegheny, Allegheny county, Pennsylval nia, have invented a new and useful Coin-vl bined Tank and Pot Furnace, of which the following isV a full, clear, and exact description,y reference being had to the accompanying,drawings, forming part of this specification, in which Figure 1 is a sectional side elevation showing a portion of my improved furnace. Fig.. 2 is a partial horizontal section. Fig. 3 is an endl elevation. Fig. 4 is a sectional plan view'fof a modified form. Fig. 5 is a sectional elevation of the same. Figs. 6 and 7 preferably employ when the is drawn into articles.

My invention relates to the manufacture of glass and glass articles, and it is designed to provide means for melting glass in a tankfurnace, causing it to overiiow into pots within a chamber in the 'tank-setting and the heating or ining of glass inthese pots, the pots being successively taken outufrom the eating-chamber and replaced by empty pots.

In the drawings, referring to Figs. 1', 2, and 3', a portion of a glass-tank furnace is indicated by 2, which furnace at the end opposite to that where the batch is fed in is provided with an overflow-trough 3. Above this trough the tank-chamber communicates with a pot-chamber 4, containing a rotary turn-table 5, in which pots 6 are set in an annular series. Thebridge-wall 7 between. the tank and pot chamber may be either hollow or solid, and the bevel-gear S for turning the. table may be located in a pit beneath the bottom 9 of the pot-chamber proper. The outer end of the pot-chamber is closed by awall sliding door l 1.

In using the apparatus the glass is allowed to overflow from the tank into the successive pots and the pot-table is turned intermittently and the pots become filled. As each pot leaves the overIiow-trough the glass in the pot will be fined and settled during the time until the pot reaches thc door-opening. This pot is then carried out through the dooropenmg and an empty pot sot on the table in its place. The pot taken out may be used to cast the glass upon a table for plate-glass, or it may be used for drawing glass therefrom in the form of cylinders, sheets, or other articles. The operation mayv go on continuously, as the pots are in position to successively receive the glass flowing through the overiiow-trough. Each empty pot when inserted will be heated up before it reaches the position for filling. l

vIn Figs. 4 and 5 I show a form similar to that of Fig. 1, except that an additional furnace 12 is provided at a convenient point adjacentto the door-opening of the main furnace. This furnace 12 may be provided with a rotary carrier or table 13 to support the pots, which may be rotated through gearing from the shaft 14. This furnace may have one or more openings 15, through which thepots may be inserted and removed.

for heating up the empty pots before putting y them in the main furnace. In these figures also I show a shelf-or support 16 in front of the door 1 1, on which the potsA may be raised while drawing out or inserting them.

In Figsx and 7 I show two forms ofppots which I prefer'to -employ where the glass is to bc drawn into cylinders, sheets, or other articles. In Fig. 6 l show a double pot having two similar containing-cavities 17 and 1S and a central projecting ring 19. The pot of Fig. 7 is the saine, except that it has a single cavityuand the ring 20 surrounds its top. The ring upon either ypot will rest around the hole in the top stone of the furnace, in which hole the pot is set for drawing.

The advantages of my invention result vfrom placing the pot-table wholly within the tank-setting. It is necessary for the proper 'lining of the glass that the temperature of the pot-chamber should bear a fixed relation to that of the tank-chamber, and I find that this fixed relation can bc maintained if the pot-table be wholly open te :heqtank-chamber. The heat from the tank. thus keeps the glass in the pots from chilling and serves to temper and A[ine it. The use of intermediate ladies, dac., is avoided, and the operation is simply and easily carried on.

I am aware that it has been proposed to provide a pot-table in a separate chamber IOO AWithin the pot--chamber and carrying an annular series of pots, an overiiowtroughlead ing from the tank-chamber and arranged to Jfeed glass directly into the successive pots, and means for turning the pot-table, the potchamber being separated from the tankchamber by a bridge-Wall 0r dam, and vbeing opened with and communicating directly with the tank-chamber above the dam or overflow and having an opening for taking out the pots; substantially as described.

2. A tank-furnace having a tanlechamber and a pot-chamber in direct and open communication therewith, a movable carrier Within the pot-chamber and having pots thereon, and an adjacent heating-furnace containing 'a pot-carrier3 substantially as described.

In testimony whereof I have hereunto set my hand. i

' JAMES A. CHAMBERS.

`Witnessesz GEO. B. BLEMING, JAMES K. BAKEWELL. 

